Looper-operating mechanism for sewing-machines.



R. G. WOODWARD. LOOPBR OPERATING MECHANISM FOR SEWING MACHINES.

APPLICATION FILED OUT. 27, 1906.

Patented Jan. 18,1910.

.Ziay

Mums,

ED AT S PATE ornion I 1 Russian G. WOODWARD, or WAUKEGARiILLiNOIS, ASSIGNOR. ro. UNION srnoIAL MACHINE COMPANY, on onrcneo, ILLINOIS, .A CORPORATION or ILLINOIS. I

noornn-ornnnrind MECHANISM non SEWING-MACHINES.

Application filed; October 27,1906. Serial No. 340,895.

To all whom 'it may concern: v

Be it known that I, RUSSELL G. vVooo- WARD, a citizen of the United States residing at VVaukegan, in the county of Lake, State of Illinois, have invented certain new and useful Improvements in LooperOperating Mechanism for Sewing-Machines, of which the following is a description, reference being had to the accompanying drawing, and to the figures of reference marked thereon.

My invention relates to looper operating mechanisms for sewing machines, and has for its ob ect, to simplify and render more durable, the means for operating said looper. My invention consists in the novel-parts,

lmprovements and arrangement hereinafter shown and described.

In the accompanying drawing which forms a part of this specification Figure 1 1s a side elevation of the forward portion of a sewing machine, with my improvements applied thereto, certain parts beingbroken away to more clearly show the construction.

Fig. 2 is a sectional view of the same taken on a line 2, 2 of Fig. 1. Fig. 3 is a oletail view, partly in plan and partly in section of the looper support and the means for oscillating the same.

The looper 1, is detachably secured to the.

looper carrier 2 by means of a screw 3. Said looper carrier 2 is pivotally connected by a pivot bolt 4, to a lug 5 formed on and extending upward from the looper supporting collar 6. Said looper supporting collar 6, is in turn mounted on a supporting rod 7 carried in brackets 8, 8 rising fromthe base j plate 9. The looper carrier 2 is oscillated about its pivot bolt 4 by a link 10 whichha's a ball and socket connection through the head 11 to the carrier 2. This link 10 is connected to the needle bar extension in the usual manner and receives movement therefrom. The looper supporting collar 6 has a In the operation of my machine, the looper is oscillatedby means of-the link "10 andfthis oscillation of the looper causes the same toenter the needle loop. The looper receives a lateral or needle avoiding movement from the arm '15 which is'oscillated by the eccentric 17. It will be noted that a movement of Specification e f-Letters Patent. PgfltentedJan, 18 19 10;

the eccentric from the position shown in Fig.

the eccentric strap 18 to turn about the pivot 20 and that the arm 15 remains substantially at rest; After the eccentric has however, passed through a few degrees of angular movement, the eccentric strap will be raised, causing the arm 15 to be oscillated and giving the looper its sidewise or needle avoiding movement. The result of this arrange 'ment of parts is that the looper is given ,its lateral movement substantially at theforward and backward portions of its stroke.

Various minor modifications and changes may be made in the detail construction de-', scribed, without departing from the spirit' of myginvention.

Having thus described my invention, what I claim as new, and desire to secure by Let-' ters Patent is '2 in aclock-wise direction, will first cause 1. A looper mechanism including in coin-.

binationa'looper, a support therefor, a main. shaft, means for oscillating said looper, and means for moving the same laterally com-' prising an arm fixed to the looper support over the main shaft, an eccentric onfthej main shaft and an eccentric strap cooperating with'said eccentric and pivoted tosaid arm, substantially as described.

and extending upwardly and backwardly- 2. A looper mechanism including in combination a looper, a looper carrier, means for oscillating said looper carrier, a supporting rod, a collar mounted on said rod to which said carrier is pivoted, means for oscillating said collar and said carrier laterally includ ing an arm, a split collar carried at one end of said arm and secured to said first named collar, an eccentric, an eccentric strap cooperating therewith, and connections between the eccentric strap and the other end of said arm.

s 3. A looper operating mechanism including in combination "a looper, a carrier there:

for, means for oscillating said looper-to en-" gage the needle loop,"'a looper supporting collar to whlch said carrier is p1voted, an extending sleeve, carried by said looper sup porting collar, a split collar and means "for clamping the same to said sleeve, an arm carried by said split collar and means for oscillating said arm'f; substantially as described.

i. A looper operating mechanism including in combination a looper, a carrier therefor, means for oscillating said looper to engage the needle-loop, a looper supporting collar to Which said carrier is :pivoted, an extending sleeve, carried by said looper supporting collar, a split collar and means for clamping to said sleeve, an arm carried by said collar, an eccentric carried by the main shaft, an eccentric strap cooperating with said eccentric and pivotally connected to said arm; substantially as described.

In testimony whereof I aflix my signature, in presence of two Witnesses.

RUSSEL G. WOODVARD. lV-itnesses CHESTER MoNErL, R. TAUBERT. 

